@filipp-sudanov said in NetXMS v5.2.7 hangs soon after start:
Yes, messages about
Thread "Syncer Thread" does not respond to watchdog thread
Thread "Recurrent scheduler" does not respond to watchdog thread
mean that something is not good with the server process (netxmsd).
Exactly. I'll try to check via Process Manager the thread stack - if/when it hangs up again.
@filipp-sudanov said in NetXMS v5.2.7 hangs soon after start:
First thing to check memory consumption by netxmsd, may be it goes up and system starts swapping.
What are the specs of the machine? What DB do you use?
Supermicro X10DRi-T, 64 Gb RAM, 2x Xeon E5-2683 v3, 1 Tb NVMe SSD with paging file.
Does not look like lack of memory, but I'll be watching that too.
@filipp-sudanov said in NetXMS v5.2.7 hangs soon after start:
Is the DB on the same machine?
Yes
@filipp-sudanov said in NetXMS v5.2.7 hangs soon after start:
From another thread is seems that you've installed with SQLite. This could be the reason for server locking.
I'm aware of the fact that SQLite is not made for heavy loads and I'm going to monitor less than ten devices (home server, dad's pc, my desktop, few routers - mostly not to worry about HDDs in RAID and to be sure WireGuard is ok). But that hanging up has happened when NetXMS was freshly installed and was monitoring only itself, then I've added one MikroTik router monitored via SNMP with default settings, - which is hardly any bit of load.
@filipp-sudanov said in NetXMS v5.2.7 hangs soon after start:
I'd recommend to migrate to MySQL, MSSQL or Postgres (I personally prefer the last option, but it's just whatever you are comfortable with).
One you've configured parameters for the new DB in netxmsd.conf, and ran "nxdbmgr init" to initialize new databases's tables, you can use
nxdbmgr import <path-to-your-sqlite-db>
to migrate your exising sqlite database into the new one.
I'll keep that in mind, thank you - I really appreciate your help 
We'll see how it works ... 